Force-feed oiler.



H. A. STANFORD G. TUGWELL.

` FGRGB FEED oma.

l l APPLICATION FILEDAPKZ, 1910. I glgswm i Patented Mal". 4, 1913.

2 SHEBTSHSHEBT 1.

HARRY A. STNFOED AND G'ERGE TUGWELS, F CHICAGO, Illlilf.

roncnrnnn einen.

programe', specification sf Letters raient. Palomo@ Mm, le, 31mg,

I Application led April 25, 19M). Serial Effe. 553.084.

l To all whom it may concern: I vided to snugly :t the bore oil-cylinderl0 it vln'ior/n that We, HARRY el.. STANFORD is the piston 12 providedwith the large bore end @nono-n Tuoi ELL, citizens of the United 13 andsmall bore le in its upper'end torm- 6o States, residing et Chicago, inthe county ingthe cset l5 at the junction of seid two of Qooll' undState of illinois, have invented hores. A second piston 16 is providedto new und useful llorce-leed iler, of which lit snugly into the here 13and lies e reduced the following is e specilication. lower end 17 to litsnugly into. the bore ll.

Uur invention relates to force feed oile'rs The oiiset 18 formed et thejunction of pie- 65 in which e reciprocating piston-is employed ton loand reduced portion 17 is the seme lo sud tile objects of ourimprovements are distance from the extreme end lil es is the rst, toeliminate ell valves; second, to eino'set l5 from the bottoni or lowerend 20 ploy' lout 'two pistons for each pump which of here le, so thatwhen the offset i8 rests on onlyreciprocete; third, to provide unedoii'set l5 theend 19 will rest on the bottoni i0 lllluent to force alarger or smaller amount 20 of bore 14. f i5 4of oil; fourth,'to make asimple, cheep and A port 2l leads from the lower end of bore durabledevice, and other features to become 14 to the exterior of iston `l2 undthe two epperent from the description to follow. ports 22 endfl lead romthe lower end of Ae is well known in the art force feed bore 13 to theexterior of the piston l2. 75 oilers sie required to pump very smellquen- When the piston l2 is in its'lowermost posi- 253.; ttioe oil oilund when the mechanism enr tion as seen in Fig. 4, tlleport 2l communi--ployeel comprises one or more valves there is estes with the interioroi rece tacle (i, the always ysoins danger' of the valves not openV port22 is closed by the Well or' cylinder l0 sting properly even; after anadjustment of and the port 23 communicates with the pas- 8o the portslies heen ina-cle, thereforee device sage 24 which leads to thetlripfunnel 25 Wit-hout Valves lilrekthis, our present ihvensbovethetop 9.When the pistoni@ is .in tion, is -v'ery desirable. its u permostposition the portQS Vis closed @or inventioncoinprises a. reciprocatingl by t e yWell of cylinder 10,l the port 22 is piston, tted to motie ino. cylinder and pr`oabout in line with the clisohargepassege 2"'5 85vided with o oeyity inlits end into which is and the port 2l is at theupper edge of the so another reciprocating piston, the lirst sightdischarge passage 2 which leads to neme@ piston being provided with esuitthe sight drip spout 28; While the shoulders able portonclopereteflby suitable meche- 29 on piston 16 rest -agziinst theunderside nisin. of the topI 9 and the offsets 18 and l5 are eo describeour invention' that others contacting. 'The shpulders 29 on piston 16versed in the ort to which itpertnins can are formed by flattening thetwo opposite e end use the seine, We lis-ye illustrated sides oi' theupper end of said piston 16 it on the accompanying two sheets or"eruwwhich extends loosely through e hole in the ings forming o. pertoi3this specilication in top 9 und is screw-threaded. screw uut 95 Whioh--y u V 30 is placed on the upper end of piston lt? su Figure l, is o.liront elevation of a device above top 9 and is held against turning bycomprising our invention; Fig. 2, is e simithe locking plate 31. Thepiston 16 is held ler View partly' infection; Fig. B, is e secagainstturning by Ineens of the .elongated tion on line 4353 of Fig. 2; Fig.4,* is a seehole in top 9 through which the flattened 100 tion on .linelf-lof Fig. 2. l portion oi the piston pisses.l

Similar reference characters .referto snnil ln operation the piston l2Iis moved up 'ler parte throughout the several views. and clown from itslowermost position to its n"he operating mechanism is contained .inuppermost position und back to its lowers suitable oil receptacle 6,having the hotroost position, continually. The receptacle 105 toni 7,vertical Walls 8 and top 9. Within G is filled with oil to any levelabove the .50 the receptacle il `tire located any desired lower enel ofcylinder l0, for example to the number .of cylinders 10 which urerigidly selevel indicated by the dotted line 32. As the cured to oneWall of receptacle (5 by screws piston l2 nieves up from the positionshown 1l or otherwise, und the cylinders l() muy or l in Fig. 4T, thepiston 1(3,hy lreason of itsliric- 110 may not oe mede integral. Sincethe cylinl tional Contact with piston l2 will also .move 'i5 ders l0 areidentical in construction und opup until Aits shoulders :29 com inContact. eration we will proceed to describe e single with the top '9.The continued upward. cylinder and its cooperative parts. Promovement ofpiston l2 will :torce the oil out from between the bottom 2O o'bore 14-and the lower end 19 of reduced piston portion 17 into passage 27, fromwhence the oil passes out at drip spout. 28 and into passage 21; and atthe same t-ime'the continued npward movement. of piston l will forge theoil out. from between the otset'ltS/and offset. 15 into the passage QG.moves down again the piston 16 will move downward with it until thescrew nut 30 contacts with the top 9; the continued downward movement ofpiston 12 will` by means ot the vacuum created, draw oil int-o the spacehetwecn the bottom 2O of bore 1-l and the lower extremity 19 ot reducedpiston portion 1T. Thus it` will be seen that. the oil is drawn'fronrwithin receptacle. 6, is forced through passage QT, drips at' QSinto passage Q-lfrom whence it is drawn and forced out through passageQG from whence it is directed by means of piping 33 to any desiredlocality.

A trans-pa rent protecting cap over the. exposed parts ot passages QT 34is secured and 24 to exclude. all foreign matter and permit. i

seeing the oil drip from spout. QS into drip Jfunnel 95.

While any dcsired n'eans maiY be employed to reciprocate the pistony ldeparting from the spirit of my invention, I have shown a novel andsuitable mechanism to cause. said movement which comprises a horizontalshaft. 35 mounted in suitable bearings rigid with cylinder 10, andhaving mounted rigidly thereon two eccentric. ams 3G which operativelyengage the slotted levers 37 .pivotally mounted at 3S to brackets rigidwith cylinder 10. 'libe free end ot' levers 37 are connected by links 39to a bar or shaft 4t) which extends through a hole provided thcrctor inthe lower end of pistons 12. The parts are so arranged and connectedthat as the shaft 35 is rotated the pistons 1'2 will be rcciprocatedlongitudinally.

Loosely mounted on shaft 35 is a worm gear 4l which meshes with the worml2 bearings rigid with the receptacle (i, said shaft. having` one endextending to the exterior of said receptacle 6 where power is ap'pliedto the same from any source desired. rigidly secured to the shaft. :l5adjacent to gear 'l1 is a collar 4l; which is provided with notches intowhich a spring pressed latch l5 sldably mounted in th'e'hub of gear 4ltakes, in such manner that; when the gear 4l rotates in one direction itwill hy reason,

ol latch 45 carry the collar :it and therefore, the shaft B5 around withit, but it the ;'ear ll rotates -in the ot-l'ler direction the latch #l5simply Clicks over the notches in collar il and said-collar and shaft 35are not. rotated.

As the piston 12k 2 without.

mounted on shaft 43 mounted in suitable.V

coupled to shaft $35 in any convenient man-- ner as b v a cross pin 1Stakin;r into the slot it) 1n the end otl collar ist; and the prot-rndingend ot' shatt -tt is squared to permit the attaching' of a handle torotate the same.

While we have shown and described a construction and Jform which atpresentV is\con sidcred the best, we may find from further experiencethat a change in the general arrangement and form ot' parts ma)vimi'wrove the device. which chantre maiv bc made without departing' fromthe scope of the invention as pointed out in the appended claims..

llaving thus tully described our invention what we claim as new anddesire to secure b v Letters la'tent ot the lfnited States istl. ln adevice of the class described, a cylinder open at' both ends. a hollowpiston ha ving' one end closed to reciprocate in said c vlindcr, asecond piston to num` in said hollow piston.y a port in said first namedpiston forming colmnunicathn between the interiorand exterior of saidpiston to cooperate with two ports through the cylinder, ahutments onthe second named piston to engage a stationarv.' part' to limit themovement. of .said piston and means whereby lost motion is providedbetween said second named pistonvand the stationair)v part.

ln a dcvicc of the class described, a stationary c vlinder open at hcthends, a piston fitted to move in said cylinder, a, large and smalllongitudinal bore in one end oi said piston, a second' piston having' alarge and a small portion to tit and move in the bores ot said lil-stnamed'piston. a port in said first inlined piston leading,r from theexterior to the small bore, a .sccond por` in said first named pistonleadizrer 'from the exteriorto the large llore. three internal passagesin :said cylinder to cot'ipcralc with said ports in said pistonand-means to reciprocate said first. named piston.

ln testimony whereof we. have signed our names to this specillcation inpresence ot two subscribing' witnesses this` 5th day of lfehruar v.ltlltl. at. (`hi.ag'o. Illinois.-

lt. J. Jammu.

